function read_yn() -> yes()
function read_yn() -> yes()

bfontaine/Katas,bfontaine/Katas,bfontaine/Katas,bfontaine/Katas,bfontaine/Katas,bfontaine/Katas,bfontaine/Katas,bfontaine/Katas,bfontaine/Katas,bfontaine/Katas,bfontaine/Katas,bfontaine/Katas